Traction-wheel.



M. W. PETERSON. TRACTION WHEEL. APPLICATION FILED MAR.21, 191s.

1, l 1 3,477. Patented Oct. 13, 1914.

V U Ni'lED STATES OFFEQE;

MANUEL Pnrnesou, or VITAL-BAY,

SOUTH DAKOTA.

TRACTZGE-"WHEEL.

Aeplieatien filed March 21,

- To (112 u'lz'om it may concern and heels; and 1 do hereby declare the fellow- -skilled in the art to which it appertains Be it known hat L himonn ll. Perms sex, a citizen of the l nited States. residing at YVar-har. in the county at Day and of South Dakota. have invented certain new useful lnipro ements in Tractiom ing to be fulh clear. and exact description of the invention. such as will enableothers to snake and use the same.

My invention relates to improvements traction devices for vehicle Wheelsand, this end, it consists ofthe novel devices combinations of devices hereinafter scribed and defined in the claims.

in to and The imention'is illustrated in t'h'e acconipanying drawings, wherein "like characters indicate like parts throughout the several news.

Referring to the drawings: Figure lis a, view in side elevation of a traction-Wheei hating incorporated therein my invention;

E3 is a taken on the line a 93 of Fig.1; Fig. 3- is a detail view partly in side elevation and partly in section, taken on the line 02- 02 Fig, 1; and Fig. i is a perspective View Of ens ef the so-ealied traction bars and seed ciated parts, some parts being broken away and the exposed parts being shown in sec-- tion. I v

The numeral 1 indicates'part of the, frame Work or" a traction engine and the numeral 2 indicates the rear axle thereof, on which is journeled e traction wheel.

G5 the parts of the traction Wheel, the

numeral 3 indicates the hub, the numeral d I the rim; and the numerals respectively, spokes. Telescoped onto the inner end of the hub-i3, oitward of the spokes 5, is a large spur gean ilgidly secured to the rim 1 and ,driren b any suitable means. A large disk-like plate 8, perforated at its axis, is teleseopedonto the outer end oi the hub 3 and is rigidly secured, eral edge portion to the spokes 6,' by'nut and S indicate, the inner and outer sets voat equipped U-bolts 9, that embrace the spokes 6 and have their ends passed through'perforetions in the plate 8. On the'outerfaee ef the plate 8, opposite each spoke 6 is a of laterally spaced, radially projecting guide bars 10. The outer ends ni' these guide bars 10 1 plate- 8 by the U-heit-s 9, inner ends .ipecificecien of Letters Patent.

vi5 are bars 12 pointed e.- tire positions and in inoperative positiens. When operative, said pointed ends project oi-itward of the periphery of the traction horizontal transverse Section;

locked with the ratchet teeth 15. springs 19- are mounted on nut equipped holts 20 that-are passed. transversely througl perforations in the traction .bars 12 and have at its periplr are rigidly secured to the.

Patented Get. 13a lilies.

Eerie). 13o. teases;

tnereot' are secured to the plate 8 nut:

eenipned bolts 11.

Slidahiy mounted for endwise ne'e'enient -.i 1 f ,r bemeen eeen pair of guide-ears in and en the outer face of the plate {3 s traction bar hese traction bees are made their en .er

wheei, and when inoperative, they are entirely inward ofthe-periphery of said Wheel.

The rateliet teeth 15 are out transversely .eci'oss the-intermediate portions of the guide bars 10, and the lock dogs 14 are mounted on" the traction bars 12. As best shown in Fig. 1, the intermediate portions ofthe teeth of the look dogs 1% are cut away te clear the l nderlying traction bars 12. The body portionsut the lock dogs 14: are provided with inwardly projectingredueed extensions which terminate in down-turned ears 16, that embrace the sides of the traction bars 12.

The lock dogs H are secured to the traction bars 12, for ivotal and limited endwise siiding movement on said traction bars. by short pins 17, secured to and projecting from the side of said bars and which pins Work in longitudinally extended slots 18, out in the ears 16. Coiled springs 19 are provided for yieldingly holding the lock dogs 1% intertheir heads seatedinfthe tractionbarsll The springs 19 are held compressed between the leekdogs 1 1 and Washers 21 on the bolts 20. Obviously, by'adjusting the nuts of the belts 20 t e tension of the springs 19 may be varied, at will. On the under side of each which engages stop shoulders 23, formed by ree'essing the outer face sf each traction bar 12. it will be noted that. the lnterlocking These pts -rrenged I lock dog 14 is a laterally projecting lug 22, I p

engagement of the lock dogs 14 With the ratchet teeth IJ'and the interlocking engagement of their lugs vvith the shoulders 2-3 is such as to positively hold the traction bars 12 locked against radial movements toward the axis of the traction wheel.

For automatically setting the traction bars 12 in different operative positions, a variable throweccentric 24: is mounted on the outer projecting endofthe hub 3, for action on roller equipped studs 25, secured to the rear endportions of the traction bars 12. This eccentric 2-2 is provided With an elongated horizontally extended opening 26, through which the hub 3 projects, and the surrounding portion of said eccentric is slidably mounted in the peripheral groove '27, cut in the hub 3. The elongated opening Q6 is so located as to permit the eccentric to he moved from a position concentric with he traction Wheel to dilferentpositions ec- I centric thereto. For moving the eccentric 2i and for locking the same in different adjust nients, alatch lever 28 is intermediately pivoted to a cooperating latch segment secured to the frame 1. The lovver or short end of the lever 28 is connected to the eccentric 24: by a long link 30. a

A segmental releasing bar 31, having a cam surface 31, .is provided for automatically lifting the lock dogs 1- out of engage-- ment with the ratchet teeth 15. One end of this releasing bar 31 is pivotally secured at to the intermediate portion of the link 30. For moving the releasing bar 31 fromopera'ti've to inoperative positions, a latch lever is pivotally secured to a co-Ziperating latch segment which, in t1,l1Il,,lS secured to the frame 1. A link pi otally connects the intermediate portion of the releasing bar 31 vvith the intermediate portion oi the latch lever 33. The releasing bar 31 projects up Ward and over the hub 3 and, when in one position, is arranged to be engaged successively by the lock dogs 14, under the advanced rotation of the traction Wheel which is in the direction of the arrow marked on Fi g. 1, and lift the said lock dogs I -'-i,'against tlle tension of the springs 19, out of engagement with. the ratchet teeth When the re leasing bar 31 is in an inoperative position, as shown in the drawings, its cam surface 31 underlies the for -vardly and upwardly projecting portions of the lock dogs 14, but

does not engage the same. As thelock dogs are lifted out of engagement with the ratchet teeth 15, which is at thcdrhighest point of travel, the traction bars 12 drop, under the action of gravity, into inoperative posit-ions. As soon as the lock dogs 14 have passed out of engagement with the releasing bar 3 the lock dogs 14 are again pressed garment with the ratchet teeth 15 by the springs 19. Obviously duringone complete rotation of the traction heel, all of the traction bars 12 have been moved from operative to inoperative positions. Itisevident-that during this process of setting the traction bars 12 in inoperative positions, the eccentric 24 must he moved into a position concentric with the axis of the traction Wheel. To move the traction bars 12 from inoperative to operative positions, the ecjustinents, the pointed ends of the traction bars 12 may be projected to a greater or less extent beyond the periphery of the traction wheel, depending onthe condition. of the road. In case the traction bars 12 become clogged vvith mud or dirt and do not drop readily, under the action of gravity, from' operative to inoperative positions, the stagmental oar 31 may beset in a position to be successively engaged by the lugs v.2, after the lock dogs 14: have'been raised by the seg mental bar 81 and thereby force said traction bars 12 into inoperative positions.

The above described device is thought to be highly efiicient for the purpose had in view. lVhat I claim is:

1. T he combination With'a vehicle Wheel, oftraction' bars slidably mounted in said wheel, means for locking said traction bars in operative and inoperative positions, means for actuating. said bar locking means and for moving said traction bars from operative to inoperative positions, and variable means for moving said traction bars from inoperative to operative positions.

2. The combination with a vehicle Wheel. of traction bars slidably mounted on said wheel, pawl and ratchet devices for locking said. traction bars to said Wheel, means for rendering said pawls inoperative, permitting said traction bars to move, under the a ion oil gravity,,into inoperative positions. and meansfor moving said traction'bars from inope ative to perativev positions 3. The combination With'a ve le Wheel,

of traction bars slidably inounted'on said wheel, pawl and ratchet devices for locking said traction barsito said wheel, means for rendering said paivls inoperative, permitting said traction bars to move, under the action of gravity, into inoperative positions. and a variable throw eccentric for moving said. traction bars from inoperative to operative positions. I

4-. The combination with a vehicle Wheel. of traction bars slidauly mounted on said locking said traction. bars operative and inoperative adapted to be set at will,

to -aid traction bars from operative to 1 -opera re positions, and variable means, adapted to he set atwill, for moving said traction bars from inoperative to operative positions.

5. The combination with a vehicle Wheel, of traction bars slidahly mounted on said Wheel, pawl and ratchet devices for locking said traction bars to said wheel, a releasing bar for moving said pawls out of engagement with said ratchet devices, and a variahle throw eccentric for moving said traction vars from inoperatireto operative positions.

(3. The combination with a vehicle Wheel,

of traction bars slidablv mounted on said wheel. pawl and ratchet devices for locking; said traction bars to said Wheel, a releasing har arranged to be moved into a position to he engaged successively by said pawls, renthe same inoperative. to permit said traction bars to move into inoperative positions, a variable tarorr eccentric and studs on said traction bars arnnged to successively cncage said eccentric to move said traction bars from inoperative to operative positions.

T. The combination with a vehicle Wheel, of ratchet bars secured to said wheel, tractioo .oars slidably mounted on said Wheel,

spring pressed lock dog's carried by said trartion bars, cooperating with said ratchet hers to lock said traction bars in operative and inoperative positions, a cam bar operated, at will. tor releasing said lock dogs, 5o permit said traction bars to be'moved from operativ Q o a variable {HO'V- eccentric, operative at will,

to more StdCt traction bars from inoperative to operative positions. I

S. "The combination With avehicie Wheel, of ratchet barssecured to said wheel, traction oars siidabiy mounted on said wheel,

spring pressed ioci; dogs carried by saidtrection oars, cooperating with said ratchet bars to lock. said traction bars in operative and inoperative, positions, cam bar 0perated, at will for releasing said lock dogs, to permit said traction bars to be moved from operative to inoperative positions, a variable throw eccentric, means for moving said eccentric from -inoperatire to operative positions, and studs on said traction bars arranged to 0e engaged by said eccentric when in at operative position.

9. lhe. combination with a vehicle Wheel, of ratchet bars secured to said Wheel, traction bars slidahly mounted on said Wheel, spring pressed lock dogs carried. by said traction bars, cooperating With said ratchet bars to tech said traction bars in operative and inoperative positions, a cam bar, means including a latch lever and cooperating segment for setting said cam bar in different adjustments, a variable throw eccentric, and means including a latch lever and cooperatingr segment for setting said eccentric in an inoperative position and in diiierent opera- Ye positions.

testimony whereof I my. signature in presence of two Witnesses.

' MANCEL PETERSON.

Witnesses Anrntn J. Pn'rnnson,

.LT. C. Pnrnnsox.

to inoperatire positions, and 

